Ok, I seriously feel like an idiot for asking this but my dad's got a 2002 Frontier and I was trying to replace the wiper arm. I'm assuming it's similiar to the Z's. The manual says I have to push on a tab, i have no idea what tab its referring to...i've pushed/pulled/squeezed everything I could think of with no luck. Can someome PLEASE help me?

 

The tab is under the arm in the center of the wiper. A small screwdriver may be helpful. Push the tab then push the wiper arm towards the window.

 

^^^^^ +1

Look at the area where the blade is attached to the frame of the wiper arm. There should be a 1-2" plastic part over there. Look at it closely and you'll see it has a small tab. Push that and pull the blade off.